The output is to display four columns:
First is 'a' , Second is square root of 'a' by the square_root(a) function I have written , Third is the square root of 'a' my math.sqrt function (inbuilt), the fourth column is to display the absolute value of the difference between column 2 and 3.

The first 3 columns display fine except for the last column. Instead of displaying the difference between the 2 columns, it {strangely} adds up the second and the third columns and finds the absolute.
What is the problem? Kindly help.

Hi. so this is actually a continuation from another question of mine[Here](https://www.daniweb.com/programming/software-development/threads/506795/dynamically-add-values-into-datagridview-cell-from-listbox-vb2010) but i was advised to start a new thread as the original question …

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